Examlex
Whose phenomenally popular recording of "Crazy Blues" in 1920 paved the way for black women to become musical recording artists?
Natural Experiment
An experiment in which nature, rather than an experimenter, manipulates an independent variable.
Community Cohesiveness
The quality of forming a united group, characterized by mutual support, shared values, and a sense of belonging among community members.
Double-masked
In medical studies, a trial in which neither the participants nor the researchers know who belongs to the control group and who belongs to the experimental group.
Placebo
An inert substance or treatment which has no therapeutic effect, used as a control in testing new drugs.
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